Spacecraft-riding microbes could colonize Mars, research suggests

May 16, 2014 4:27 PM

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Microorganisms from Earth could hitch a ride on spacecraft and end up colonizing the Red Planet and other celestial bodies in the solar system, recent research suggests.

The new research has implications for the search for life in the solar system: If Earth's microbes can survive the perilous journey to other planets and moons, it may be difficult to determine whether any microbial life discovered on those bodies originated there or was introduced from Earth, scient...